Pith Number

pith:SSFBQQVD

pith:2016:SSFBQQVD2TTUVVN3X3VDWPJIBM

not attested not anchored not stored refs pending

Notes on the Veech group of the Chamanara surface

Anja Randecker, Frank Herrlich

arxiv:1612.06877 v1 · 2016-12-20 · math.GT · math.DS

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SSFBQQVD2TTUVVN3X3VDWPJIBM}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:54:15.138504Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

948a1842a3d4e74ad5bbbeea3b3d280b021734d21c8df79c13a11bc4c23aebb7

Aliases

arxiv: 1612.06877 · arxiv_version: 1612.06877v1 · doi: 10.48550/arxiv.1612.06877 · pith_short_12: SSFBQQVD2TTU · pith_short_16: SSFBQQVD2TTUVVN3 · pith_short_8: SSFBQQVD

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/SSFBQQVD2TTUVVN3X3VDWPJIBM \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 948a1842a3d4e74ad5bbbeea3b3d280b021734d21c8df79c13a11bc4c23aebb7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01e2520c18a575e7cafc2cb5636a4f22486b6ec366c7b897b91072b325264446",
    "cross_cats_sorted": [
      "math.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2016-12-20T21:08:13Z",
    "title_canon_sha256": "4a5d3450a5eeb7b4eee06ccf2561ea18fad12929a1efed0d3fa1b99659d77150"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.06877",
    "kind": "arxiv",
    "version": 1
  }
}